Aliens Were Already Here | Ancient Aliens

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A compelling compilation exploring the theory that extraterrestrials visited Earth in ancient times, leaving behind clues in monuments, myths, and mysterious artifacts that suggest aliens were already here. See more in this Ancient Aliens compilation. 0:00 - Brazil's Inga Stone 5:08 - Ancient Mining Facility 11:13 - Mysterious Elongated Skulls Around the World 18:00 - Unknown World in our Depths Watch new episodes Thursdays at 9/8c and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: https://histv.co/AncientAliens Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Instagram - https://www.instagram.com/history TikTok - https://www.tiktok.com/@history "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.